Need use 32-bit register to hold 32-bit stack address.

[mirror_edk2.git] / MdePkg / Library / BaseLib / X64 / WriteDr1.asm

diff --git a/MdePkg/Library/BaseLib/X64/WriteDr1.asm b/MdePkg/Library/BaseLib/X64/WriteDr1.asm
index 89f36ac3f94b793f32b9789fd7a8c790193f22b8..366edb6ef881271415e96ff0ecabf93654ba0b64 100644 (file)
--- a/MdePkg/Library/BaseLib/X64/WriteDr1.asm
+++ b/MdePkg/Library/BaseLib/X64/WriteDr1.asm
@@ -27,11 +27,12 @@
 ; UINTN\r
 ; EFIAPI\r
 ; AsmWriteDr1 (\r
-;   VOID\r
+;   IN UINTN Value\r
 ;   );\r
 ;------------------------------------------------------------------------------\r
 AsmWriteDr1 PROC\r
     mov     dr1, rcx\r
+    mov     rax, rcx\r
     ret\r
 AsmWriteDr1 ENDP\r
 \r